AUC for Apo B was 0.761 [95% confidence interval (CI): 0.533 to 0.914; p 0.018], for Apo B/Apo AI ratio 0.782 (95% CI: 0.557 to 0.927; p 0.007), indicating a moderate to good ability to discriminate between patients with and without AS. The gene discussed is APOA1; the disease is aortic stenosis.